---
description: "Reference for Nitric's v0 JVM library - Register a handler for HTTP POST requests to the route."
---

# JVM - api.route.post()

Register an API route and set a specific HTTP POST handler on that route.

<Tabs syncKey="jvm-lang">

<TabItem label="Java">

```java
import io.nitric.Nitric;

public class Application {
  public static void main(String[] args) {
	var api = Nitric.INSTANCE.api("public");

	api.route("/customers").post((ctx) -> {
	  // handle POST request
	  return ctx;
	});

	Nitric.INSTANCE.run();
  }
}
```

</TabItem>

<TabItem label="Kotlin">

```kotlin
import io.nitric.Nitric

fun main() {
  val api = Nitric.api("public")

  api.route("/customer").post { ctx ->
	// handle POST request
	ctx
  }

  Nitric.run()
}
```

</TabItem>

</Tabs>

## Parameters

<Properties>
  <Property
    name="middleware"
    required
    type="HttpMiddleware or List<HttpMiddleware>"
  >
    One or more middleware functions to use as the handler for HTTP requests.
    Handlers can be sync or async
  </Property>
</Properties>

## Examples

### Register a handler for POST requests

<Tabs syncKey="jvm-lang">

<TabItem label="Java">

```java
import io.nitric.Nitric;

public class Application {
  public static void main(String[] args) {
	var api = Nitric.INSTANCE.api("public");

	api.route("/customers").post((ctx) -> {
	  // handle POST request
	  return ctx;
	});

	Nitric.INSTANCE.run();
  }
}
```

</TabItem>

<TabItem label="Kotlin">

```kotlin
import io.nitric.Nitric

fun main() {
  val api = Nitric.api("public")

  api.route("/customer").post { ctx ->
	// handle POST request
	ctx
  }

  Nitric.run()
}
```

</TabItem>

</Tabs>

### Chain functions as a single method handler

When multiple functions are provided they will be called as a chain. If one succeeds, it will move on to the next. This allows middleware to be composed into more complex handlers.

<Tabs syncKey="jvm-lang">

<TabItem label="Java">

```java
import io.nitric.Nitric;
import io.nitric.faas.v0.HttpContext;
import io.nitric.faas.v0.Handler;

import java.util.List;

public class Application {
  static HttpContext validateRequest(HttpContext ctx, Handler<HttpContext> next) {
	// validateRequest
	return next.invoke(ctx);
  }

  static HttpContext handleRequest(HttpContext ctx, Handler<HttpContext> next) {
	// handle request
	return next.invoke(ctx);
  }

  public static void main(String[] args) {
	var api = Nitric.INSTANCE.api("public");

	api.route("/customer").post(List.of(Application::validateRequest, Application::handleRequest));

	Nitric.INSTANCE.run();
  }
}
```

</TabItem>

<TabItem label="Kotlin">

```kotlin
import io.nitric.Nitric
import io.nitric.faas.v0.HttpContext
import io.nitric.faas.v0.Middleware

val validateRequest = Middleware<HttpContext> { ctx, next ->
  // validate request
  return@Middleware next(ctx)
}

val handleRequest = Middleware<HttpContext> { ctx, next ->
  // handle request
  return@Middleware next(ctx)
}

fun main() {
  val api = Nitric.api("public")

  api.route("/customer").post(listOf(validateRequest, handleRequest))

  Nitric.run()
}
```

</TabItem>

</Tabs>

### Access the request body

The POST request body is accessible from the `ctx.req` object.

<Tabs syncKey="jvm-lang">

<TabItem label="Java">

```java
import io.nitric.Nitric;

public class Application {
  public static void main(String[] args) {
	var api = Nitric.INSTANCE.api("public");

	api.route("/customer").post((ctx) -> {
	  var customerData = ctx.getReq().getData();
	  // parse, validate, and store the request payload...
	});

	Nitric.INSTANCE.run();
  }
}
```

</TabItem>

<TabItem label="Kotlin">

```kotlin
import io.nitric.Nitric

fun main() {
  val api = Nitric.api("public")

  api.route("/customer").post { ctx ->
	val customerData = ctx.req.data
	// parse, validate, and store the request payload...
  }

  Nitric.run()
}
```

</TabItem>

</Tabs>
